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script: Wrap unsafe code in components/script/bindings in unsafe {} (#38544)

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Clippy now checks to see if unsafe code is wrapped in unsafe blocks. We
have this lint disabled for `script` and `script_bindings` because of a
lot of legacy code that doesn't do this. The lint is useful though as it
makes it more obvious what code is unsafe. This is an incremental step
toward being able to turn this lint on for `script`.

This has the benefit of silencing warnings that show up in some IDEs
that use rust-analyzer.

Testing: This should not change behavior at all and is thus covered by
existing tests.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Martin Robinson 2025-08-08 19:18:30 +02:00 • committed by GitHub
parent fef104cff7
commit 931025c16e
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13 changed files with 147 additions and 114 deletions
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12
components/script/dom/bindings/cell.rs
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@ -49,9 +49,11 @@ impl<T> DomRefCell<T> {
#[allow(unsafe_code)]
pub(crate) unsafe fn borrow_for_layout(&self) -> &T {
assert_in_layout();
self.value
.try_borrow_unguarded()
.expect("cell is mutably borrowed")
unsafe {
self.value
.try_borrow_unguarded()
.expect("cell is mutably borrowed")
}
}
/// Borrow the contents for the purpose of script deallocation.
@ -68,7 +70,7 @@ impl<T> DomRefCell<T> {
#[allow(unsafe_code, clippy::mut_from_ref)]
pub(crate) unsafe fn borrow_for_script_deallocation(&self) -> &mut T {
assert_in_script();
&mut *self.value.as_ptr()
unsafe { &mut *self.value.as_ptr() }
}
/// Mutably borrow a cell for layout. Ideally this would use
@ -86,7 +88,7 @@ impl<T> DomRefCell<T> {
#[allow(unsafe_code, clippy::mut_from_ref)]
pub(crate) unsafe fn borrow_mut_for_layout(&self) -> &mut T {
assert_in_layout();
&mut *self.value.as_ptr()
unsafe { &mut *self.value.as_ptr() }
}
}